Home / 115,399.50-159,232.07-77,097.64

Finding the Fourth Proportional to 115,399.50, 159,232.07 and 77,097.64

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Solution

The fourth proportional to 115,399.50, 159,232.07 and 77,097.64 is: 106,381.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,399.50 : 159,232.07 = 77,097.64 : x
  2. Step 2: Convert to fraction form
    115,399.50/159,232.07 = 77,097.64/x
  3. Step 3: Cross multiply
    115,399.50x = 159,232.07 × 77,097.64
  4. Step 4: Simplify right side
    115,399.50x = 12,276,416,809.31
  5. Step 5: Solve for x
    x = 12,276,416,809.31/115,399.50
  6. Step 6: Final answer
    x = 106,381.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.